By ELLEN GRIMM, Telegraph Correspondent
NASHUA – Samuel Bak’s first art exhibit was in the Vilna Ghetto of Poland, where thousands of Jews had been forced to live under German occupation during World War II.

Bak was just a young boy at the time, but his drawings stood out for their remarkable pathos and skill. Tens of thousands of Jews were killed in Vilna; Bak and his mother were among a small group who survived. His father and his closest childhood friend, Samek, were among those killed.

At 73, Bak is still grappling with these experiences. His paintings, now on display at the Rivier College Art Gallery through April 17, are haunted by images of fragmented worlds.

“This Great Fragility: The Art of Samuel Bak” is presented in collaboration with the Pucker Gallery of Boston.

Bak will be at Rivier College on April 16 for several events, including an artist’s reception and an annual Holocaust memorial service, a collaboration between Rivier’s department of religious studies and the Nashua Holocaust Remembrance Committee.